51745694128703 has 8 divisors (see below), whose sum is σ = 51848776267200. Its totient is φ = 51642626405760.

The previous prime is 51745694128697. The next prime is 51745694128717. The reversal of 51745694128703 is 30782149654715.

It is a happy number.

It is a Cunningham number, because it is equal to 7193448²-1.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 51745694128703 - 2²² = 51745689934399 is a prime.

It is a super-2 number, since 2×51745694128703² (a number of 28 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51745694128103) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3596723 + ... + 10790171.

It is an arithmetic number, because the mean of its divisors is an integer number (6481097033400).

It is a 2-persistent number, because it is pandigital, and so is 2⋅51745694128703 = 103491388257406, but 3⋅51745694128703 = 155237082386109 is not.

Almost surely, 2^{51745694128703} is an apocalyptic number.

51745694128703 is a deficient number, since it is larger than the sum of its proper divisors (103082138497).

51745694128703 is a wasteful number, since it uses less digits than its factorization.

51745694128703 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7207777.

The product of its (nonzero) digits is 50803200, while the sum is 62.

The spelling of 51745694128703 in words is "fifty-one trillion, seven hundred forty-five billion, six hundred ninety-four million, one hundred twenty-eight thousand, seven hundred three".